19899530

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{271}}^1\times {\mathrm{1049}}^1$

素因数の和:1334

約数の個数: 32

約数和(自身を含む): 41126400

約数和(自身を除く): 21226870

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 271, 542, 1049, 1355, 1897, 2098, 2710, 3794, 5245, 7343, 9485, 10490, 14686, 18970, 36715, 73430, 284279, 568558, 1421395, 1989953, 2842790, 3979906, 9949765, 19899530]

約数ペア:

[(1, 19899530), (2, 9949765), (5, 3979906), (7, 2842790), (10, 1989953), (14, 1421395), (35, 568558), (70, 284279), (271, 73430), (542, 36715), (1049, 18970), (1355, 14686), (1897, 10490), (2098, 9485), (2710, 7343), (3794, 5245)]